﻿using System;
using System.Diagnostics;
using System.Globalization;
using System.Runtime.InteropServices;
using System.ComponentModel.Design;
using Microsoft.Win32;
using Microsoft.VisualStudio.Shell.Interop;
using Microsoft.VisualStudio.OLE.Interop;
using Microsoft.VisualStudio.Shell;

namespace BSPEdit.AboutBoxPackage
{
  /// <summary>
  /// This is the class that implements the package exposed by this assembly.
  ///
  /// The minimum requirement for a class to be considered a valid package for Visual Studio
  /// is to implement the IVsPackage interface and register itself with the shell.
  /// This package uses the helper classes defined inside the Managed Package Framework (MPF)
  /// to do it: it derives from the Package class that provides the implementation of the 
  /// IVsPackage interface and uses the registration attributes defined in the framework to 
  /// register itself and its components with the shell.
  /// </summary>
  // This attribute tells the PkgDef creation utility (CreatePkgDef.exe) that this class is
  // a package.
  [PackageRegistration(UseManagedResourcesOnly = true)]
  // This attribute is needed to let the shell know that this package exposes some menus.
  [ProvideMenuResource("Menus.ctmenu", 1)]
  [Guid(GuidList.guidAboutBoxPackagePkgString)]
  public sealed class AboutBoxPackage : Package
  {
    /// <summary>
    /// Default constructor of the package.
    /// Inside this method you can place any initialization code that does not require 
    /// any Visual Studio service because at this point the package object is created but 
    /// not sited yet inside Visual Studio environment. The place to do all the other 
    /// initialization is the Initialize method.
    /// </summary>
    public AboutBoxPackage()
    {
      Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "Entering constructor for: {0}", this.ToString()));
    }



    /////////////////////////////////////////////////////////////////////////////
    // Overriden Package Implementation
    #region Package Members

    /// <summary>
    /// Initialization of the package; this method is called right after the package is sited, so this is the place
    /// where you can put all the initilaization code that rely on services provided by VisualStudio.
    /// </summary>
    protected override void Initialize()
    {
      Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "Entering Initialize() of: {0}", this.ToString()));
      base.Initialize();

      // Add our command handlers for menu (commands must exist in the .vsct file)
      OleMenuCommandService mcs = GetService(typeof(IMenuCommandService)) as OleMenuCommandService;
      if (null != mcs)
      {
        // Create the command for the menu item.
        CommandID menuCommandID = new CommandID(GuidList.guidAboutBoxPackageCmdSet, (int)PkgCmdIDList.cmdidHelpAbout);
        MenuCommand menuItem = new MenuCommand(MenuItemCallback, menuCommandID);
        mcs.AddCommand(menuItem);
      }
    }
    #endregion

    /// <summary>
    /// This function is the callback used to execute a command when the a menu item is clicked.
    /// See the Initialize method to see how the menu item is associated to this function using
    /// the OleMenuCommandService service and the MenuCommand class.
    /// </summary>
    private void MenuItemCallback(object sender, EventArgs e)
    {
      AboutBox aboutBox = new AboutBox();
      aboutBox.ShowModal();
    }

  }
}
